Hidden away in a small neighborhood in Hawaii Kai is a magnificent coastline, not often seen from the main road. But turning off the main road onto Portlock road will lead to hidden sandy beaches and a magnificent rocky coastline. The most of impressive of which, is the Spitting Cave of Portlock. To get there, follow Portlock road to Lumahai road; you can access the Spitting Cave by parking at the end of Lumahai and taking a short but steep trail down to a sloping, 60 foot high bluff.